query_question: The tank in Fig. P2.63 has a 4-cmdiameter plug which will pop out if the hydrostatic force on it reaches 25 N. For 20°C fluids, what will be the reading h on the manometer when this happens? <image 1>
options: ['0.152 m', '2.032 m', '0.362 m']
demo_question_list: The long pipe in Fig. 3.133 is filled with water at 20°C. When valve A is closed, p1 - p2 = 75 kPa. When the valve is open and water flows at 500 m^3/h, p_1 - p_2=160 kPa. What is the friction head loss between 1 and 2, in m, for the flowing condition? <image 1>
  A. 7.6 m
  B. 9.2 m
  C. 8.7 m
  
  Answer with the option's letter from the given choices directly. An ideal gas taken round the cycle ABCA as shown in PV diagram<image 1>.The work done during the cycle
  A. PV
  B. PV/2
  C. 2PV
  D. PV/3
  
  Answer with the option's letter from the given choices directly. The tank of liquid in the figure P2.139 accelerates to the right with the fluid in rigid-body motion. Compute a_x in m/s^2. <image 1>
  A. 1.00 m/s2
  B. 1.50 m/s2
  C. 1.28 m/s^2
  
  Answer with the option's letter from the given choices directly. An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of 175 kPa. Water is stirred by a paddle wheel while a current of 8 A flows for 45 min through a resistor placed in the water. If one-half of the liquid is evaporated during this constant-pressure process and the paddle-wheel work amounts to 400 kJ, determine the voltage of the source. Also, show the process on a P-v diagram with respect to saturation lines. <image 1>
  A. 204 V
  B. 224 V
  C. 244 V
  
  Answer with the option's letter from the given choices directly.